Reference : Kinematic evidence for feedback-driven star formation in NGC 1893
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/223155
Kinematic evidence for feedback-driven star formation in NGC 1893
English
Lim, Beomdu mailto [Université de Liège - ULiège > > > chercheur libre sciences]
Sung, Hwankyung [Department of Physics and Astronomy, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea]
Bessell, Michael S. [Research School of Astronomy and Astrophysics, The Australian National University, Canberra, ACT 2611, Australia]
Lee, Sangwoo [Space Environment Laboratory, Inc., 8 Nonhyeon-ro 150-gil, Gangnam-gu, Seoul 06049, Republic of Korea]
Lee, Jae Joon [Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea]
Oh, Heeyoung [Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea]
Hwang, Narae [Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea]
Park, Byeong-Gon [Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea; Astronomy and Space Science Major, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea]
Hur, Hyeonoh [Daegu National Science Museum, 20, Techno-daero 6-gil, Yuga-myeon, Dalseong-gun, Daegu 43023, Republic of Korea]
Hong, Kyeongsoo [Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea]
Park, Sunkyung [School of Space Research, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Republic of Korea)]
1-Jun-2018
Monthly Notices of the Royal Astronomical Society
Blackwell Publishing
477
1993-2003
Yes (verified by ORBi)
0035-8711
1365-2966
Oxford
United Kingdom
[en] stars: formation ; stars: kinematics and dynamics ; H <sc>ii</sc> regions ; ISM: kinematics and dynamics ; open clusters and associations: individual (NGC 1893)
[en] OB associations are the prevailing star-forming sites in the Galaxy. Up to now, the process of how OB associations were formed remained a mystery. A possible process is self-regulating star formation driven by feedback from massive stars. However, although a number of observational studies uncovered various signposts of feedback-driven star formation, the effectiveness of such feedback has been questioned. Stellar and gas kinematics is a promising tool to capture the relative motion of newborn stars and gas away from ionizing sources. We present high-resolution spectroscopy of stars and gas in the young open cluster NGC 1893. Our findings show that newborn stars and the tadpole nebula Sim 130 are moving away from the central cluster containing two O-type stars, and that the time-scale of sequential star formation is about 1 Myr within a 9 pc distance. The newborn stars formed by feedback from massive stars account for at least 18 per cent of the total stellar population in the cluster, suggesting that this process can play an important role in the formation of OB associations. These results support the self-regulating star formation model.
http://hdl.handle.net/2268/223155
10.1093/mnras/sty713
http://adsabs.harvard.edu/abs/2018MNRAS.477.1993L

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